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Denis Papin

Papin, Denis (dənēˈ päpăNˈ) [key], 1647–1712?, French physicist and inventor. He was an assistant of Christian Huygens and of Robert Boyle and was professor of mathematics at the Univ. of Marburg (1687–96). He invented (1679) a steam digester (forerunner of the autoclave), a vessel in which the boiling point of water is raised by an increase in steam pressure; this device demonstrated the influence of atmospheric pressure on boiling points. His other inventions include a safety valve (for the digester), a condensing pump, an air gun, and a paddle-wheel boat. A pioneer in the development of the steam engine, he devised in 1690 a pump with a piston raised by steam.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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